Chapter 5. Important Differences between the 3275/3277
and the 3278
Contents
5-1
Introduction
5-3
Screen Character Capacities
5-4
3278 Operator Controls
5-5
On/Off (I/O ) Switch
5-5
-(f Brightness Control
5-6
() Contrast Control
5-6
ftAudible Alarm Volume Control
5-6
Normal/Test Switch
5-6
Dual Case/Mono Case (A, a/ A) Switch
5-6
3278 Display Image ·5-7
3278 Operator Information Area
5-8
3278 Keyboards
5-9
Problem Determination Guide Access Panel
5-10
Keyboard Clicker
5-11
Additional Keyboard Keys
5-11
Typamatic (Repeat-Action) Keys
5-14
Keys That Operate the Same on 3278 and 3275/3277
5-14
Keys That Operate Differently on 3278 and 3275/3277
5-14
Numeric Lock Feature
5-15
Selector Light Pen Feature
5-15
Magnetic Slot Reader Accessory
5-15
Chapter 5. Differences between the 3275/3277 and the 3278 5-1